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Types and materials of wood screws

Wood screws and machine screws are similar, but the thread on the screw for wood screws with the special thread, can be directly screwed into the wooden components (or parts), used to put a hole with the metal (or metal parts) with a wooden component fastening together. This connection is also removable connection.

Wood screws

Wood screws are commonly used in two kinds of materials, one is the iron material, and the other is a stainless steel material. Stainless steel wood screws are SUS201, SUS304, SUS316, etc..

Main categories of wood screws

A common type of wood screws with iron and copper, with different types of nail head with a round head type, flat type, elliptical head, nail head and a slotted screw and posidriv screw two, head screw is made of mild steel by general blue, polished flat screw, oval head screws are usually cadmium plating chromium, commonly used in the installation of loose leaf, hook and other hardware accessories. Specifications to rod diameter and length of the nail head and decided to purchase to box as a unit.

Wood screws and self tapping screws identification

Self tapping screw thread high hardness, wide spacing, thread depth, surface smooth, wood screws on the contrary, another difference is more obvious, after the no wood screw thread. Screw thread is fine, sharp and soft. Tapping screw thread is thick, sharp and hard.

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